Inseam-trimming machine



No. 623,3I3.m Patnted. Apr, I8, |899.

G. JULIAN.

INSEAM TRIMMING MACHINE.

(Application med Jan. 12, 1898.)

(No Model.)

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NTTnn STATES PATENT GIDEON JULIAN, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO CHARLES F. BROWN, TRUSTEE, OF READING,

MASSACHUSETTS.

lNSEAlVl-TRINHVIING MACHINE.

SPECIFICATION forming part Of Letters Patent N0. 623,313, dated April 18C, 1899. Application filed JanuarylZv, 1898. Serial No. 666,450. (No model.)

To ZZZ luf/bont t may concern.'

Beit known that I, GIDEON JULIAN, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain -new and useful Improvements in Seam-Trim ming Machines, of which the following is a specification.

This invention relates to machines for trimming off surplus material from boots and 1o shoes, such as the surplus edges of the upper and welt, prior to the attachment of the outer sole to the welt, and has for its object to provide a simple and effective machine of this character.

1 5 Theinvention consists in the improvements which I will now proceed t'o describe and claim.

Of the accompanying drawings, Figure l represents a side elevation of an inseam-trimzo ming machine embodying my invention. Fig. 2 represents an end elevation of the same. Fig. 3 represents a top plan viewshowing the relative arrangement of the work-rest and the trimming-knives or shear-blades. Fig. 4

represents a view similar to a portion of Fig.

l, the work-rest being removed.

The same letters of reference indicate like parts in all the iigures.

In the drawings, a represents a supporting- 3Q frame, which may be of any suitable form.

b represents a rest adapted to enter the crease between the welt w and upper a of a welted boot or shoe, said welt and upper and the inner sole t' being shown in dotted lines in Fig. l. The rest b is preferably a disk mounted to rotate loosely on a stud b', af.- iixed to an arm b2, which is adjustably connected to the frame c. by means of a bolt b3, which is adapted to secure the arm b2 adjust- 4o ably and permit the rest h to be raised or lowered by swinging the arm o2 upwardly or downwardly, the arm being rigidly secured when the machine is in operation. 'The rest l) is preferably reduced to a thin edge at its margin to fit the welt-crease, as indicated in Fig. l.

c and LZ represent shear-blades, one of which is fixed, while the other is movable and adapted to oscillate,said blades being arranged to cooperate in trimming off the surplus por- 5o tions of the welt and upper, leaving the edges of said parts substantially liush with the outer surface of the inner sole. v The blade c, which is fixed, is attached to an arm c, rigidly mounted on the frame a, and is located over the rest ZJ in position to bear upon and support the outer surface of the body of the welt. The blade d, which is movable, has an oscillating movement, the center of oscillation being at the point CZ', Fig. 3. Said blade CZ is 6o here shown as affixed to an arm (Z2, having provisions for detachably securing the blade d, the arm being split at (Z3 and having dovetailed shoulders Z4 d4, which are clamped against the edges of the blade CZ by a screw d5. The arm (Z2 is affixed to a rock-shaft CZG, which is journaled in bearings (Z7 Z7 on the frame a. Means are provided for rocking or oscillating the shaft cZ6 in its bearings, said means, as here shown, comprising a shaft e, 7o journaled in bearings on the frame a and driven by power applied in anysuitable way,

as by a belt running on a pulley e', affixed to said shaft. To one end of the shaft e is affixed a collar e2, having a flat diagonal face, which bears against a corresponding flat face on a disk e3, which is pivoted at el to thev rock-shaft cZ. The faces of the collar e2 and disk e3 bear loosely against each other, and the diagonal arrangement of the face of the 8o collar c2 causes the rotation of said collar to impart an oscillating movement to the disk c3 and rock-shaft CZ, thus oscillating the blade CZ, one end of which is in the plane of the axial center of the rock-shaft CZ, said axial center being the point (ZC (Shown in Fig. 3.)

The rock-shaft (Z6 preferably has a longitudinal ymovement in its bearings and is pressed by a spring f toward the fixed shearblade c, this yielding pressure compensating 9o for wear of the blades and keeping them in operative contact.

It will be seen that when the work is engaged with the rest b the surplus edges of the welt and upper will project between the blades c and CZ and that the described Inovement of the blade CZ will cause said blades to coperate in trimming oif the projecting material. It will also be seen that the arrangement of the fixed blade shown and described, whereby its under or outer side serves as a bearing or support for the adjacent part of the work, enables thel fixed blade io act as a gage for determining the height of the trimmed edge, the distance between the latter and the part of the work that bears against the outer 'side of the xed blade being equal to the thickness of said blade.

The rest b may be dispensed with in trimming the surplus edge of the upper of a turned boot or shoe which has no welt, the upper being held by the operator against the outer face of the iixed blade, as shown in Fig. 4.

l claiml. Aseam-trimmercomprisingatixed shear-V blade, a shear-blade arranged to oscillate on an axis at a right angle to the plane ofits cutting edge to coperate with the fixed shearblade as described, the fixed blade having its outer side arranged as a bearing-face or support for the work, so that l'the thickness of the fixed blade determines the height of the trimmed edge, and means for operating the oscillatory blade.

2. Aseam-trimmercomprisingafixed shearblade, an oscillatory shear-blade arranged to cooperate therewith as described, the fixed blade having its outer side arranged as a bearing-face or support for the work, so that the thickness of the xed blade determines the height ot' the trimmed edge, means for operating the oscillatory blade, said means having provisions for permitting a movement of the oscillatory blade toward and from the fixed blade, and means for exerting a yielding pressure on the oscillatory blade to hold it against the fixed blade.

3. A seam-trimmer comprising a fixed shearblade having an outer work-supporting face, a rock-shaft having a` shear-blade arranged to coperate with said fixed shear blade, means for rocking said shaft to oscillate its blade, said means having provisions for permitting a longitudinal movement of the rockshaft, and means for exertinga yielding pressure on the rock-shaft to press its blade against the fixed blade.

4. A seam trimmer comprising a rest formed to enter the welt-crease and guide the work, a fixed shear-blade adjacent to said rest, a rock-shaft having a shear-blade arranged to'coperate with said ixed shearblade, means for rocking said shaft to oscillate its blade, said means having provisions for permitting a longitudinal movement of the rock shaft, and means for exerting a yielding pressure on the rock-shaft to press its blade against the Iixed blade.

In testimony whereof I affix my signature in presence of two witnesses.

GDEON JULIAN. 

